Sum Of Angles Outside A Triangle. The triangle sum theorem is also called the triangle angle sum theorem or angle sum theorem. Exterior angles of a triangle about exterior angles of triangles how to find the unknown exterior angle of a triangle how to prove that the sum of exterior angles of a triangle is 360.
For more on this see triangle external angle theorem. Exterior angle theorem the measure of an exterior angle our w of a triangle equals to the sum of the measures of the two remote interior angles our x and y of the triangle. In the figure above drag the orange dots on any vertex to reshape the triangle.
An exterior angle of a triangle is equal to the sum of the opposite interior angles.
X 24 32 180 sum of angles is 180 x 56 180 x 180 56 124 worksheet 1 worksheet 2 using triangle sum theorem. Exterior angle theorem the measure of an exterior angle our w of a triangle equals to the sum of the measures of the two remote interior angles our x and y of the triangle. Use the figure at the. In the figure above drag the triangle s vertices and see that this is so.
